Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Books Books
" When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it. "
The Elements of geometry; or, The first six books, with the eleventh and ... - Page 2
by Euclides - 1855
Full view - About this book

Some Suggestions for the Teaching of English in Secondary Schools in England

Great Britain. Board of Education - English language - 1924 - 70 pages
...reading is not soon exhausted. 41 Euclid's definition of a right angle is as follows : — " If one straight line standing on another straight line makes the adjacent angles equal, each of these angles is a right angle." And his thirteenth proposition is : " If one straight line...
Full view - About this book

Stories about Mathematics-land, Volume 2

D. Ponton - Mathematics - 1927 - 168 pages
...a common arm. Vertically opposite Angles are those made when two straight lines cross one another. When a straight line, standing on another straight...the adjacent angles equal to one another, each of the angles is called a Right Angle, and the straight line which stands on the other is called a perpendicular...
Full view - About this book

Adeline's Art Dictionary: Containing a Complete Index of All Terms Used in ...

Jules Adeline - Archaeology - 1927 - 442 pages
...straight lines. It is called curvilinear ANA ANI when it is contained by portions of curves. When one straight line standing on another straight line makes the adjacent angles equal, each of these angles is called a right angle. A right angle measures 9o°. An angle of 45° (ie half...
Full view - About this book

Geometry, Relativity, and the Fourth Dimension

Rudy von Bitter Rucker - Science - 1977 - 166 pages
...of this postulate is not clear until we have defined right angles: "When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right." This postulate seems to be equivalent to the assumption that the things...
Limited preview - About this book

The Foundations of Geometry and the Non-Euclidean Plane

G.E. Martin - Mathematics - 1997 - 536 pages
...containing the angle are straight, the angle is called rectilineal. 10. When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to...
Limited preview - About this book

Geometry and the Visual Arts

Daniel Pedoe - Mathematics - 1983 - 338 pages
...containing the angle are straight, the angle is called rectilineal. 10. When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to...
Limited preview - About this book

Collected Works of Bernard Lonergan: Collection

Bernard J. F. Lonergan, Robert M. Doran - Philosophy - 1988 - 372 pages
...straight lines. It is a nominal definition. The tenth definition reads: 'When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to...
Limited preview - About this book

Geometry: A Comprehensive Course

Daniel Pedoe - Mathematics - 1988 - 468 pages
...containing the angle are straight, the angle is called rectilineal. 10 When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to...
Limited preview - About this book

Thinking Things Through: An Introduction to Philosophical Issues and ...

Clark N. Glymour - Philosophy - 1997 - 406 pages
...containing the angle are straight, the angle is called rectilinear. 10. When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to...
Limited preview - About this book

Mathematical Cranks

Underwood Dudley - Mathematics - 1992 - 388 pages
...prefer to leave the term undefined — but others were just fine: When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to...
Limited preview - About this book




  1. My library
  2. Help
  3. Advanced Book Search
  4. Download EPUB
  5. Download PDF